Q: How is the number 69,978,290 written in Scientific Notation?

 A: 6.997829 x 107

Why is 69,978,290 written as 6.997829 x 107 in scientific notation?

The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease.

Calculating scientific notation for a positive integer is simple, as it always follows this notation:

a x 10b

Follow the steps below to see how 69,978,290 is written in scientific notation.

Step 1

To find a, take the number and move a decimal place to the right one position.

  • Original Number: 69,978,290
  • New Number: 6.9978290

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 6.9978290
Decimal Count: 1234567

There are 7 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 6.997829 (Please notice any zeroes on the end have been removed)

b = 7

Now the whole thing:

6.997829 x 107

Step 4

Check your work:

107 = 10,000,000 x 6.997829 = 69,978,290


More Scientific Notation Examples

69,978,28869,978,28969,978,29169,978,292
6.9978288 x 1076.9978289 x 1076.9978291 x 1076.9978292 x 107

Explore more about the number 69,978,290:


Ask a Question